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Nvidia’s New RTX 40 GPU Dies Seem to Fix Bug, Likely Won’t Cut Price

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Earlier this week it transpired that Nvidia had begun to use new revisions of its AD103 and AD104 graphics processors for GeForce RTX 4080 and GeForce RTX 4070 add-in-boards (AIBs). Some thought the new revisions might reduce power consumption and/or increase yields, which could affect costs of actual cards. But Igor’s Lab claims that the new GPUs only have a built-in comparator for fans, which will have little effect on bill-of-materials (BOM) AIB costs. 

Nvidia’s AD103-300 (used for GeForce RTX 4080) and AD104-250 (used for GeForce RTX 4070 and RTX 4070 Ti) graphics processing units require makers of graphics cards to add a comparator circuit which ensures that fans rotate at the right speed by comparing fans PWM signal with actual values, according to Igor’s Lab. The new AD104-251 and AD103-301 integrate the comparator into the GPU, which means that AIBs no longer need to carry external comparator circuitry. 

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